JP6774872B2 - Push-pull cap - Google Patents

Push-pull cap Download PDF

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JP6774872B2
JP6774872B2 JP2016513797A JP2016513797A JP6774872B2 JP 6774872 B2 JP6774872 B2 JP 6774872B2 JP 2016513797 A JP2016513797 A JP 2016513797A JP 2016513797 A JP2016513797 A JP 2016513797A JP 6774872 B2 JP6774872 B2 JP 6774872B2
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overcap
spout
liquid
cap
container
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JPWO2015159888A1 (en
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有美 柏村
有美 柏村
孝士 阪口
孝士 阪口
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Lion Corp
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Lion Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • B65D47/24—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat
    • B65D47/241—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat the valve being opened or closed by actuating a cap-like element
    • B65D47/243—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat the valve being opened or closed by actuating a cap-like element moving linearly, i.e. without rotational motion

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Description

本発明は、オーバーキャップを押し引きして開閉するプッシュプルキャップ及びそれを備えた液体注出容器に関する。 The present invention relates to a push-pull cap that opens and closes by pushing and pulling an overcap, and a liquid dispensing container provided with the push-pull cap.

成形されたプラスチックボトルの中には、プッシュプルキャップと呼ばれるキャップが装着されたものがあり、このプッシュプルキャップは、押し込む（プッシュ）操作と引っ張る（プル）操作によってキャップの注出口を開閉することが可能となっている（特許文献１参照）。 Some molded plastic bottles are equipped with a cap called a push-pull cap, which opens and closes the spout of the cap by pushing (pushing) and pulling (pulling). (See Patent Document 1).

一般に、開閉するプッシュプルキャップにおいて、容器胴部を把持した際等に、前回使用時に注出口付近に残った液による泡飛びや液飛びを防止することが種々に考えられているが、更に十分さが求められている。 In general, in a push-pull cap that opens and closes, it is considered variously to prevent bubbles and liquids from splashing due to the liquid remaining near the spout at the time of the previous use, such as when gripping the container body, but it is more sufficient. Is required.

例えば、プッシュプルキャップ以外のキャップの液戻し構造に関して、特許文献２には注出口に一体の密閉部材を使用時に取り去る液体洗浄剤製品が開示されている。この特許文献２に記載の液体洗浄剤製品では、キャップの天井部に注出口が形成されると共に、キャップの内部側には、注出口の開口部周辺に、注出口内面に延長させるか注出口に近接させて開口を囲む遮蔽壁が設けられている。そして、遮蔽壁の容器側開口に傾斜部を形成しており、この傾斜部を液がつたうことで、液戻し促進を図っている。 For example, regarding the liquid reconstitution structure of a cap other than the push-pull cap, Patent Document 2 discloses a liquid cleaning agent product that removes a sealing member integrated with a spout at the time of use. In the liquid cleaning agent product described in Patent Document 2, a spout is formed on the ceiling of the cap, and on the inner side of the cap, the spout is extended or extended to the inner surface of the spout around the opening of the spout. A shielding wall is provided to surround the opening in close proximity to. An inclined portion is formed at the opening on the container side of the shielding wall, and the liquid is spilled on the inclined portion to promote liquid return.

しかしながら、この特許文献２記載のキャップの機構を、プッシュプルキャップに採用した場合、容器口元内に挿入する遮蔽壁が寸法を要するのでオーバーキャップの外径が大きくなってしまい、デザイン上の制約や、樹脂量増加などが問題となる。 However, when the cap mechanism described in Patent Document 2 is adopted for the push-pull cap, the outer diameter of the overcap becomes large because the shielding wall to be inserted into the container mouth requires dimensions, which causes design restrictions. , Increasing the amount of resin becomes a problem.

一方、プッシュプルキャップに関する特許文献３では、筒状部の内壁に非対称形状の段差の設置により、液戻しを促進している。 On the other hand, in Patent Document 3 relating to a push-pull cap, liquid return is promoted by installing an asymmetrically shaped step on the inner wall of the tubular portion.

特開２００８−１３７７０１号公報Japanese Unexamined Patent Publication No. 2008-137071 特開平１１−７０９６２号公報Japanese Unexamined Patent Publication No. 11-70962 特許第３９５５４２０号公報Japanese Patent No. 3955420

しかしながら、ボトル胴部スクイズによる内容液排出後のボトル復元体積が小さい場合や、又は、内容液の粘度が高い場合に、上記特許文献等の既存の抑制機構では、液の戻りが不十分であり、泡飛びが発生してしまうことが確認された。 However, when the restored volume of the bottle after discharging the content liquid by the bottle body squeeze is small, or when the viscosity of the content liquid is high, the existing suppression mechanism such as the above patent document is insufficient to return the liquid. , It was confirmed that bubble skipping occurred.

本発明は、斯かる実情に鑑み、液を排出後に注出口付近に溜まっている液を、更に効率的にボトル内部に戻す機構を実現するプッシュプルキャップを提供するものである。 In view of such circumstances, the present invention provides a push-pull cap that realizes a mechanism for more efficiently returning the liquid accumulated near the spout after discharging the liquid to the inside of the bottle.

本発明は、容器（ボトル）に装着されて、容器をスクイズすることによって内容物を注出するプッシュプルキャップであって、キャップ本体と、キャップ本体に立設された棒状栓体でキャップ本体に液密に装着され、上下動可能とされたオーバーキャップを有し、このオーバーキャップが、天部に液体を注出する注出口を有すると共に注出口を囲んで容器側に垂下する筒状部を有し、この筒状部の内部形状が注出口から下方に向けて漸次拡開することを特徴とするプッシュプルキャップである。 The present invention is a push-pull cap that is attached to a container (bottle) and ejects the contents by squeezing the container. The cap body and a rod-shaped stopper erected on the cap body are attached to the cap body. It has an overcap that is liquid-tightly mounted and can move up and down, and this overcap has a spout for pouring liquid at the top and a tubular part that surrounds the spout and hangs down to the container side. It is a push-pull cap characterized in that the internal shape of the tubular portion gradually expands downward from the spout.

本発明においては、上記オーバーキャップを上方へ稼動させた開口時に、注出口の開口面積をＳ１とし、キャップ本体の棒状栓体先端側におけるオーバーキャップとの嵌合部の先端部における液流路面積をＳ２としたときに、１≦（Ｓ２／Ｓ１）≦２であることが好適である。In the present invention, when the opening is operated the overcap upward, the opening area of the spout and S 1, liquid flow paths at the distal end of the fitting portion between the overcap in the rod-like plug tip side of the cap body When the area is S 2 , it is preferable that 1 ≦ (S 2 / S 1 ) ≦ 2.

本発明においては、上記オーバーキャップ内部の筒状部の内部形状が、注出口から下方に向けて漸次拡開する円錐形状を有することが好適である。 In the present invention, it is preferable that the internal shape of the tubular portion inside the overcap has a conical shape that gradually expands downward from the spout.

発明者の知見によれば、泡飛び発生に最も影響するのは、「注出口内部に残留した液」である。 According to the inventor's knowledge, it is the "liquid remaining inside the spout" that has the greatest effect on the occurrence of foam skipping.

本発明のプッシュプルキャップによれば、オーバーキャップが、天部に液体を注出する注出口を有すると共に注出口を囲んで容器側に垂下する筒状部を有し、この筒状部の内部形状が注出口から下方に向けて漸次拡開しており、液が局所的に留まりづらくなり、内容液の排出後に容器が復元する際に、キャップ内部へスムーズに引き込まれ、効率的に落とすことができる。 According to the push-pull cap of the present invention, the overcap has a spout for pouring a liquid at the top and a tubular portion that surrounds the spout and hangs down toward the container, and the inside of the tubular portion. The shape gradually expands downward from the spout, making it difficult for the liquid to stay locally, and when the container is restored after the content liquid is discharged, it is smoothly drawn into the cap and dropped efficiently. Can be done.

したがって、内容液の排出後に容器の復元力・復元体積が小さい場合（角形ボトル等）や、内容液の粘度が高い場合、既存の抑制機構では、液の戻りが不十分である場合も、注出口付近の残液もキャップ内に効率的に落とすことができる。 Therefore, even if the restoring force / restoring volume of the container is small (square bottle, etc.) after the content liquid is discharged, the content liquid has a high viscosity, or the existing suppression mechanism is insufficient to return the liquid, note Residual liquid near the outlet can also be efficiently dropped into the cap.

なお、筒状部において注出口から下の内壁の内部形状を、段差や屈曲点を設けず、漸次拡開した形状、特に、円錐形状にすることで、一層溜まりにくくすることができる。 It should be noted that the internal shape of the inner wall below the spout in the tubular portion is gradually expanded without providing a step or a bending point, particularly a conical shape, so that it can be further prevented from accumulating.

本発明の実施形態に係るプッシュプルキャップを容器に嵌合した液体注出容器の縦断した説明図で、（ａ）が開口時、（ｂ）が閉口時のものである。It is a longitudinal explanatory view of the liquid pouring container in which the push-pull cap according to the embodiment of the present invention is fitted in the container, in which (a) is an opening and (b) is a closing. （ａ）がプッシュプルキャップの縦断した開口面積と液流路面積の説明図、（ｂ）が液流路部の断面図である。(A) is an explanatory view of a longitudinal opening area and a liquid flow path area of the push-pull cap, and (b) is a cross-sectional view of the liquid flow path portion.

以下、本発明の実施形態について添付図面を参照して説明する。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

図１は、本発明の実施形態に係るプッシュプルキャップを設けた注出用容器の説明図で、（ａ）が開口時、（ｂ）が閉口時をそれぞれ示す。 FIG. 1 is an explanatory view of a pouring container provided with a push-pull cap according to an embodiment of the present invention, in which (a) is open and (b) is closed.

実施形態に係るプッシュプルキャップは、容器（ボトル）１０に装着されて、容器１０をスクイズすることによって内容物を注出するものである。なお、容器１０はブロー成型や樹脂成型したものであり、押圧・非押圧したときに弾性変形・弾性復帰する構造のものであればよい。 The push-pull cap according to the embodiment is attached to a container (bottle) 10 and dispenses the contents by squeezing the container 10. The container 10 is blow-molded or resin-molded, and may have a structure that elastically deforms and elastically recovers when pressed or not pressed.

プッシュプルキャップは、容器１０の上端に細径の口元部１０ａに外側からネジ結合しているキャップ本体１２と、キャップ本体１２に立設された棒状栓体１２ｃで液密に装着されて上下動可能とされたオーバーキャップ１４とを有する。 The push-pull cap is liquid-tightly attached to the upper end of the container 10 by a cap body 12 screwed to a small-diameter mouth portion 10a from the outside and a rod-shaped plug body 12c erected on the cap body 12 to move up and down. It has an overcap 14 made possible.

このオーバーキャップ１４は、天部１６に液体を注出する注出口１８を有すると共に注出口１８を囲んで容器１０側に垂下する筒状部２０を有し、この筒状部２０の内周（内部形状）が注出口１８から下方に向けて漸次拡開する。 The overcap 14 has a spout 18 for pouring a liquid into the top portion 16 and a tubular portion 20 that surrounds the spout 18 and hangs down toward the container 10, and the inner circumference of the tubular portion 20 ( (Internal shape) gradually expands downward from the spout 18.

詳しくは、キャップ本体１２は、上下に連通された概略回転体であり、下部１２ａが袴状に広がって容器１０の肩部を覆い、その内部に筒状部に雌ねじが形成されて容器１０の口元部１０ａに螺合している。上部に筒状受け部１２ｂが上方向きに延在し、筒状受け部１２ｂの内周に、オーバーキャップ１４の内側の筒状部２０が挿入されている。また、キャップ本体１２には、筒状部２０に取り囲まれた軸心位置に棒状栓体１２ｃが上方に延在して立設している。キャップ本体１２では、下部１２ａと筒状受け部１２ｂとの間に仕切り壁が形成され、その仕切り壁には同心状に筒状受け部１２ｂと棒状栓体１２ｃが立設すると共に、棒状栓体１２ｃに隣接して仕切り壁を貫通する流通孔１２ｄが形成されている。 Specifically, the cap body 12 is a substantially rotating body that communicates vertically, and the lower portion 12a spreads like a hakama to cover the shoulder portion of the container 10, and a female screw is formed in the tubular portion inside the cap body 12 to form the container 10. It is screwed into the mouth portion 10a. The tubular receiving portion 12b extends upward in the upper portion, and the tubular portion 20 inside the overcap 14 is inserted into the inner circumference of the tubular receiving portion 12b. Further, on the cap body 12, a rod-shaped plug body 12c extends upward and stands at an axial center position surrounded by the tubular portion 20. In the cap body 12, a partition wall is formed between the lower portion 12a and the tubular receiving portion 12b, and the tubular receiving portion 12b and the rod-shaped plug body 12c are concentrically erected on the partition wall, and the rod-shaped plug body is erected. A flow hole 12d is formed adjacent to the 12c and penetrates the partition wall.

オーバーキャップ１４には、筒状部２０を取り囲んで外壁部１４ａが互いの間に隙間を置いて天部１６で連続されて形成されている。この隙間内に筒状受け部１２ｂが位置するようにオーバーキャップ１４をキャップ本体１２に装着して組み付ける。この状態で、該筒状受け部１２ｂの内側に筒状部２０が位置し、外側で外周を覆うように前記外壁部１４ａが設けられる。また、この外壁部１４ａの内面と筒状受け部１２ｂの外面に互いに凸部が形成されて、オーバーキャップ１４の開・閉位置で係止して位置固定可能に形成されている。 The overcap 14 is formed by surrounding the tubular portion 20 and having outer wall portions 14a continuously formed by the top portion 16 with a gap between them. The overcap 14 is attached to the cap body 12 and assembled so that the tubular receiving portion 12b is located in this gap. In this state, the tubular portion 20 is located inside the tubular receiving portion 12b, and the outer wall portion 14a is provided so as to cover the outer circumference on the outside. Further, convex portions are formed on the inner surface of the outer wall portion 14a and the outer surface of the tubular receiving portion 12b, and are locked at the open / closed positions of the overcap 14 so that the positions can be fixed.

オーバーキャップ１４の天部１６では、注出口１８から外向きの短い部分ではラッパ状に拡径するが、天部１６から内側に位置したところの絞り込まれるような最も狭い箇所が注出口１８の液流出する開口（図２（ａ）に示す開口面積Ｓ１）になる。また、キャップ本体１２には、筒状部２０に取り囲まれた軸心位置に棒状栓体１２ｃが上方に延在している構造になっている。この注出口１８に前記棒状栓体１２ｃが抜・挿して（オーバーキャップ１４が上・下して）注出口１８が開・閉する。In the top 16 of the overcap 14, the diameter of the short portion outward from the spout 18 is expanded in a trumpet shape, but the narrowest part located inside from the top 16 is the liquid of the spout 18. It becomes the outflow opening (opening area S 1 shown in FIG. 2A). Further, the cap body 12 has a structure in which the rod-shaped plug body 12c extends upward at the axial center position surrounded by the tubular portion 20. The rod-shaped plug body 12c is pulled out and inserted into the spout 18 (the overcap 14 is moved up and down), and the spout 18 is opened and closed.

つまり、図１（ａ）に示すように、当該オーバーキャップ１４を上方に移動させたときに棒状栓体１２ｃが注出口１８から離れて開状態（開位置）になる。 That is, as shown in FIG. 1A, when the overcap 14 is moved upward, the rod-shaped plug body 12c is separated from the spout 18 and is in an open state (open position).

一方、図１（ｂ）に示すように、当該オーバーキャップ１４を下方に移動させたときに棒状栓体１２ｃが注出口１８に入り込んで密着して閉状態（閉位置）になる。 On the other hand, as shown in FIG. 1B, when the overcap 14 is moved downward, the rod-shaped plug 12c enters the spout 18 and comes into close contact with the overcap 14 to be in a closed state (closed position).

ここで、図２に示すように、上記オーバーキャップ１４を上方へ稼動させた注出口１８の開口時に、注出口１８の開口面積をＳ１とし、キャップ本体１２の棒状栓体１２ｃ先端側におけるオーバーキャップ１４との嵌合部の先端部と、筒状部２０内壁面との間における液流路面積をＳ２としたときに、１≦（Ｓ２／Ｓ１）≦２としている。Here, as shown in FIG. 2, when the spout 18 is opened by operating the overcap 14 upward, the opening area of the spout 18 is set to S 1 , and the cap body 12 is over on the tip side of the rod-shaped plug 12c. When the liquid flow path area between the tip of the fitting portion with the cap 14 and the inner wall surface of the tubular portion 20 is S 2 , 1 ≦ (S 2 / S 1 ) ≦ 2.

１≦（Ｓ２／Ｓ１）≦２とする根拠を説明する。The rationale for setting 1 ≦ (S 2 / S 1 ) ≦ 2 will be described.

（Ｓ２／Ｓ１）＜１の場合、内容液の排出後に容器が復元する際に、液流路面積Ｓ２部分の空気の流速が開口面積Ｓ１部分よりも大きいために、オーバーキャップ１４の注出口１８に残存した内容液がキャップ本体１２側に引き戻され易いが、液排出時にＳ２部分での抵抗が高まり、スムーズな排出を行いづらいという問題がある。In the case of (S 2 / S 1 ) <1, when the container is restored after the content liquid is discharged, the air flow velocity in the liquid flow path area S 2 portion is larger than that in the opening area S 1 portion, so that the overcap 14 easily drawn back Note the content liquid cap body 12 side remaining at the outlet 18 of, but increased resistance in the S 2 moiety at the liquid discharge, there is a problem that hardly perform smooth discharge.

２＜（Ｓ２／Ｓ１）の場合、液流路面積Ｓ２部分の空気の流速が開口面積Ｓ１部分よりも小さくなり過ぎて、オーバーキャップ１４の注出口１８に残存した内容液をキャップ本体１２側に引き戻す効果が弱くなる。When 2 <(S 2 / S 1 ), the air flow velocity in the liquid flow path area S 2 portion becomes too small compared to the opening area S 1 portion, and the content liquid remaining in the spout 18 of the overcap 14 is capped. The effect of pulling back to the main body 12 side becomes weak.

以上から、オーバーキャップ１４の開口面積Ｓ１と液流路面積Ｓ２との関係について、スクイズ後に容器１０が復元する際に、キャップ注出口１８から空気が取り込まれるが、液流路面積Ｓ２を開口面積Ｓ１の２倍以内とすることで、空気が通過する流速が早くなるため、内容液が注出口下部に留まりづらくなる。一方、液流路面積Ｓ２が小さ過ぎると、スムーズな排出を行いづらく、押し出しづらくなってしまうので、液流路面積Ｓ２は開口面積Ｓ１と同等以上である必要がある。したがって、オーバーキャップ１４の開口面積Ｓ １と液流路面積をＳ２との関係を、１≦（Ｓ２／Ｓ１）≦２とすることによって、オーバーキャップ１４の注出口１８に残存した内容液を引き戻し易く、かつ液排出時にも液を出し易くすることができる寸法範囲にできる。 From the above, the opening area S of the overcap 141And liquid flow path area S2Regarding the relationship with, when the container 10 is restored after the squeeze, air is taken in from the cap injection port 18, but the liquid flow path area S2The opening area S1By setting the value to less than twice that of, the flow velocity through which air passes becomes faster, so that it becomes difficult for the content liquid to stay in the lower part of the spout. On the other hand, the liquid flow path area S2If is too small, it will be difficult to discharge smoothly and it will be difficult to push out, so the liquid flow path area S2Is the opening area S1Must be equal to or greater than. Therefore, the opening area S of the overcap 14 1And the liquid flow path area is S2Relationship with 1 ≦ (S2/ S1) ≤ 2, the size range can be set so that the content liquid remaining at the spout 18 of the overcap 14 can be easily pulled back and the liquid can be easily discharged even when the liquid is discharged.

また、上記オーバーキャップ１４内部の筒状部２０の内部形状が、注出口から下方に向けて漸次拡開する円錐形状を有している。 Further, the internal shape of the tubular portion 20 inside the overcap 14 has a conical shape that gradually expands downward from the spout.

したがって、オーバーキャップ１４の筒状部２０の内部形状が漸次拡開する形状であるために、引き戻された内容液が壁面に伝わって内方に戻り易くなる効果を有する。 Therefore, since the internal shape of the tubular portion 20 of the overcap 14 is a shape that gradually expands, there is an effect that the pulled-back content liquid is transmitted to the wall surface and easily returns to the inside.

この場合、筒状部２０の内部形状は、ドーム状よりも、円錐形状であることで、液流路面積Ｓ２を開口面積Ｓ１の２倍以内とし易い。なお、漸次拡開する円錐形状とは、円錐形状に見なせる程度の内方又は外方に向けて凸となる円弧を持つドーム状形状でもよく、液流路面積Ｓ２及び開口面積Ｓ１の関係を確保できればよい。In this case, since the internal shape of the tubular portion 20 is conical rather than dome-shaped, the liquid flow path area S 2 can be easily set to be within twice the opening area S 1 . Incidentally, the conical shape gradually expanding, may be a domed shape having a circular arc which is convex inward or outward to the extent that can be regarded in a conical shape, the liquid flow path area S 2 and the relationship of the opening area S 1 It is only necessary to secure.

なお、図２（ａ）において、オーバーキャップ１４を上方に移動させて注出口１８を開口している状態である。キャップの開口面積Ｓ１を示す矢印の両側端部に位置する注出口１８内面が、オーバーキャップ１４を閉じた際に、棒状栓体１２ｃが接するシール位置である。また、液流路面積Ｓ２を示す矢印の両側端が棒状栓体１２ｃの上端（先端）よりもやや下方に位置しているが、当該Ｓ２を示す矢印に対応する棒状栓体１２ｃの外周面の位置が、オーバーキャップ１４が下方に移動して閉じた際に、棒状栓体１２ｃの外周面が注出口１８の内面に接するシール位置である。
このようにシール位置を、前記棒状栓体１２ｃの上端よりもやや下方に位置させるのは、オーバーキャップ１４が閉じた際に、前記棒状栓体１２ｃの上端が注出口１８よりも突出するようにしたものである。
したがって、この棒状栓体１２ｃを突出させる構造により、注出口１８と棒状栓体１２ｃの互いが、矢印Ｓ１、Ｓ２で示す位置ですり合ってシールが確実にでき、液漏れが防止できる。In addition, in FIG. 2A, the overcap 14 is moved upward to open the spout 18. Spout 18 the inner surface located on both ends of the arrows indicate the opening area S 1 of the cap, when closed overcap 14, a sealing position in contact with the rod-shaped stopper 12c. Further, although both ends of the arrow indicating the liquid flow path area S 2 are located slightly below the upper end (tip) of the rod-shaped plug 12c, the outer circumference of the rod-shaped plug 12c corresponding to the arrow indicating the S 2 is located. The position of the surface is the seal position where the outer peripheral surface of the rod-shaped plug 12c contacts the inner surface of the spout 18 when the overcap 14 moves downward and closes.
In this way, the seal position is positioned slightly below the upper end of the rod-shaped plug 12c so that the upper end of the rod-shaped plug 12c protrudes from the spout 18 when the overcap 14 is closed. It was done.
Accordingly, by the structure to protrude the rod-shaped stopper 12c, note mutual outlet 18 and the rod-shaped stopper 12c is, arrows S 1, can S by each other sliding in position the seal is reliably indicated by 2, liquid leakage can be prevented.

実施形態のプッシュプルキャップによれば、オーバーキャップ１４が、天部１６に液体を注出する注出口１８を有すると共に注出口１８を囲んで容器側に垂下する筒状部２０を有し、この筒状部２０において、注出口１８から下方に向けて、注出口１８から下の内壁を、段差や屈曲点を設けず、漸次拡開した形状（特に円錐形状）にすることで、液が局所的に留まりづらくなり、キャップ内部へ効率的に落とすことができる。発明者の知見によれば、泡飛び発生に最も影響するのは、「注出口内部に残留した液」であるので、上記の筒状部２０の内壁を、段差や屈曲点を設けず、漸次拡開した形状にすることで効果的に対処できる。 According to the push-pull cap of the embodiment, the overcap 14 has a spout 18 for pouring a liquid to the top 16 and a tubular portion 20 that surrounds the spout 18 and hangs down toward the container. In the tubular portion 20, the inner wall below the spout 18 is formed into a shape (particularly a conical shape) that gradually expands from the spout 18 downward without providing a step or a bending point, so that the liquid is localized. It becomes difficult to stay on the target and can be efficiently dropped into the cap. According to the inventor's knowledge, it is the "liquid remaining inside the spout" that most affects the occurrence of foam skipping, so the inner wall of the tubular portion 20 is gradually provided with no steps or bending points. It can be effectively dealt with by making it an expanded shape.

特に、スクイズ前後の体積変化が少なくなり易いボトル、例えば角型の断面形状を有するボトルで威力を発揮する。 In particular, it is effective for bottles in which the volume change before and after squeeze tends to be small, for example, a bottle having a square cross-sectional shape.

ここで、本発明品と比較品とについて液戻り泡飛びを比較した結果を下記する。

Figure 0006774872
Here, the results of comparing the liquid return foam skipping between the product of the present invention and the comparative product are described below.
Figure 0006774872

上記から、１≦（Ｓ２／Ｓ１）≦２の範囲内で好適な本発明品は１０秒という短い時間で液戻りが良好にでき、泡飛びが発生しないことが確認された。これに対して、比較品２では、泡飛びが無かったが、液戻りに３０秒を要することが確認された。また、比較品ｌ、３、４はいずれも３０秒の静止でも液戻りが不十分であって、泡飛びが発生することが確認された。これらから、１≦（Ｓ２／Ｓ１）≦２であることが好ましく、本発明品の有用性が明確になった。From the above, it was confirmed that the product of the present invention, which is suitable within the range of 1 ≦ (S 2 / S 1 ) ≦ 2, can return the liquid well in a short time of 10 seconds and does not cause foam skipping. On the other hand, in Comparative Product 2, although there was no foam skipping, it was confirmed that it took 30 seconds for the liquid to return. In addition, it was confirmed that the comparative products l, 3 and 4 had insufficient liquid return even after standing still for 30 seconds, and that foam skipping occurred. From these, it is preferable that 1 ≦ (S 2 / S 1 ) ≦ 2, and the usefulness of the product of the present invention has been clarified.

本発明のプッシュプルキャップは、液体洗剤、液体柔軟剤等を収容する液体注出容器製品に利用することができる。 The push-pull cap of the present invention can be used for a liquid dispensing container product containing a liquid detergent, a liquid softener, or the like.

１０ 容器
１２ キャップ本体
１２ａ 下部
１２ｂ 筒状受け部
１２ｃ 棒状栓体
１４ オーバーキャップ
１４ａ 外壁部
１６ 天部
１８ 注出口
２０ 筒状部10 Container 12 Cap body 12a Lower part 12b Cylindrical receiving part 12c Rod-shaped plug body 14 Overcap 14a Outer wall part 16 Top part 18 Outlet 20 Cylindrical part

Claims (1)

容器に装着されて、容器をスクイズすることによって内容物を注出するプッシュプルキャップであって、
キャップ本体と、オーバーキャップと、を有し、
オーバーキャップを上方に移動させたときに、キャップ本体に立設された棒状栓体が、
オーバーキャップの有する注出口から離れて開状態となり、オーバーキャップを下方に移動させたときに、キャップ本体に立設された棒状栓体が、オーバーキャップの有する注出口に入り込んで密着して閉状態となるように、オーバーキャップがキャップ本体に対して上下動可能に装着されており、
このオーバーキャップが、天部に液体を注出する前記注出口を有し、前記天部の上端の開口から下方に位置して絞り込まれたように最も狭くなった箇所の開口が液流出する前記注出口となり、前記注出口を囲んで容器側に垂下する筒状部を有し、この筒状部の内部形状が前記注出口から下方に向けて段差や屈曲点を設けず、漸次拡開した円錐形状であり、
前記オーバーキャップを上方へ稼動させた開口時に、
前記注出口の開口面積をＳ １ とし、キャップ本体の棒状栓体先端側におけるオーバーキャップとの嵌合部の先端部と、筒状部内壁面との間における液流路面積をＳ ２ としたときに、
１≦（Ｓ ２ ／Ｓ １ ）≦２であることを特徴とするプッシュプルキャップ。 A push-pull cap that is attached to a container and ejects the contents by squeezing the container.
It has a cap body and an overcap,
When the overcap is moved upward, the rod-shaped plug that stands on the cap body
When the overcap is opened away from the spout of the overcap and the overcap is moved downward, the rod-shaped plug erected on the cap body enters the spout of the overcap and is in close contact with the closed state. The overcap is attached so that it can move up and down with respect to the cap body.
The overcap has the spout for pouring the liquid into the top, and the opening at the narrowest part is discharged as if it is located below the opening at the upper end of the top and is narrowed down. Note becomes outlet has a tubular portion extending downward into the container side surrounds the spout, the inner shape of the cylindrical portion is not provided with a step or bending point downward from the spout, and gradually expanded conical shape der is,
At the time of opening when the overcap is operated upward
The opening area of the spout and S 1, when the tip portion of the fitting portion between the overcap in the rod-like plug tip side of the cap body, a liquid flow path area between the cylindrical portion wall was S 2 To,
A push-pull cap characterized in that 1 ≦ (S 2 / S 1 ) ≦ 2 .
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US3201013A (en) * 1963-12-11 1965-08-17 Product Design & Engineering I Dispensing and closure cap for containers
JPH072441Y2 (en) * 1990-03-02 1995-01-25 東洋製罐株式会社 Pouring lid
JPH0589255U (en) * 1992-05-22 1993-12-07 凸版印刷株式会社 Foamy dispensing cap
GB9624636D0 (en) * 1996-11-27 1997-01-15 Lyons Kerrin M A container
JP3955420B2 (en) * 1999-11-05 2007-08-08 ライオン株式会社 Push-pull cap
JP2001151260A (en) * 1999-11-30 2001-06-05 Yoshino Kogyosho Co Ltd Pouring cap for container
JP2002264958A (en) * 2001-03-12 2002-09-18 Lion Corp Liquid detergent product
JP2004051138A (en) * 2002-07-18 2004-02-19 Yoshino Kogyosho Co Ltd Push-pull cap
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